I have just embarked upon a PhD in Lattice QCD. I'm wondering, what is research like in other areas of theoretical particle physics? Lattice is highly computational and fairly light on theory so it seems a lot of people in the field spend quite a bit of time making/updating and running large amounts of code. Does most research in theoretical particle physics involve numerical simulations to a large extent? Is there anyone that still does things with good old pen and paper apart from maybe string theorists? I say this because I guess I like the formal side of things more than the computational part which I find kind of mechanical. But it seems that most research in theoretical particle physics involves a fair amount of numerical simulations, so it is kinda inescapable.